21 WEST 100 STREET is a prewar 1915 building, 5 floors, 10 units in Upper West Side, NYC. Owned by 21 W 100 ST OWNERS CORP. Public records show 1 open violation, 36 311 complaints on file.
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Manhattan · March 2026
Best & worst months to sign a lease
Potential savings: ~9% by timing your move to February.
Asking rent per bedroom type — switch tabs to see each with effective (concession-net) rent.
Monthly counts over the last 7 years · all data sources
(A) § HMC:FILE ANNUAL BEDBUG REPORT IN ACCORDANCE WITH HPD RULE AS DESCRIBED ON THE BACK OF THIS NOTICE OF VIOLATION OR AS DESCRIBED ON HPDS WEBSITE, WWW.NYC.GOV\HPD, SEARCH BED BUGS.
Portfolio-level grade reflects the landlord's buildings across NYC, weighted by unit count. Individual building grades may differ.
View full landlord profileACRIS deeds and regulatory filings
The northern Upper West Side around 100th to 110th streets is where Columbia University's influence begins to creep in. Morningside Park, cheaper rents than the 70s and 80s, and a diverse mix of academics, families, and longtime residents give it an easygoing, unpretentious energy.
Graffiti
Illegal Parking — Commercial Overnight Parking
Illegal Parking — Commercial Overnight Parking
Illegal Dumping — Chronic Dumping
Illegal Parking — License Plate Obscured
Noise — Noise: Construction Before/After Hours (NM1)
Noise — Noise: Construction Before/After Hours (NM1)
Abandoned Vehicle — With License Plate
Derelict Vehicles
Derelict Vehicles